Case Presentation: A 58-year-old male presented to the hospital with several days of fatigue and shortness of breath. His vitals were initially stable, and labs showed a hemoglobin of 4.2 (normal 13.5—17.5), white blood cell count WBC 20.1 (4.5—11.0), and platelet count 43 (160—420), BNP 617 (0—900 pg/ml). He received one unit of packed red [...]